Clutching device adapted for use in communicating rotary motion and in controlling the transmission thereof.



No. 873,978- PATENTED DEC. 17, I907- I. BAILEY & F. H. JACKSON. CLUTCHING DEVICE ADAPTED POB USE IN COMMUNICATING ROTARY MOTION AND IN CONTROLLING THE TRANSMISSION THEREOF.

APPLICATION FILED DEC. 27, 1906.

2 SHBETSSHBIJT 1.

No 873,978. PATENTED DEC. 17, 1907 F. BAILEY & F. H. JACKSON. OLUTOHINO DEVICE ADAPTBD FOR USE-IN OOMMUNIGATING ROTARY MOTION AND IN CONTROLLING THETOANOMISSION THEREOF.

APPLICATION FILED DEC. 27, 1906.

20 (cording to ourimprovedm'ethod, Figure I'is 3O for""fulldrive,-to operate as a positive or mechanical clutch The said clutc de vice comprises a casing A formed with a l chamhera 35 To all whom it may concern: I

'oLU'rcmi re nnvmn nnai 'rnn non mm "In Be it known that we, FRANK BAILEY and FREDERICK HENRYJA'CKSO'N, 'subj ects of the King of Great Britain and Ireland, and resid- 5 ing .at 64 Bankside, in the county of London, England, have invented new and useful Irn- I prove nents in Clutching Devices- Adapted tor Use in Communicating Rotary Motien i I v mth'at the pisto 1 I held out of o. era'tion..-

and in Controlling the Transr'riission'T-hereofi, of which theiol'lowing .is a specification. 'This' invention relates to the transmission 1 of rotary motion by means of apparatus of 1 the kind described in the vspecification filed in, pursuance of our application ior Letters Patent on theth- November, l QOfiQSenQNo'.

r 345,794, and nonsists in improve-i 'scribe'd'aclutching evice-adap ments designed to increase the efficiency ofsuch apparatus. a

In 'the accompanying drawings, which] illustrate clutch apparatus'fconstructed ace a longitudinal section on theline 2, Fig. 2 is a transverse 1 sect" thefline y y 1n Fig. 1 and Fig.3 dinal section on the line 2-;2 2.v

In our aforesaid riorspeclficatron. is de sition of fslip-dnve, to o'pe'a rate as a draulic clutch and, upon the retilrn-flow-passages being closed and conditions esta-blished or more enlargements of a circular but yeccentric character. The diskB isiformed with radial slots in which slab-like pistons C slide; the sides of the said pisbons closely fitting the I inner sides of the'casing. When the disk B revolves in'rel'ation'to the A, .orlthe casing revolves about. thedis'k, as the case I be, the pistons G, if uncontrolled in the manner hereinafter described, sweep the eccentric or otherenlarg ement orlenlargements I of the central chamber a.

The disk B- is mounted m a hollow Share 1 D, and is provided with 'radiaLpaSsages b,

whereby communication is .between the peripheral exterior of the disk and Q the interior of the hollow shaft; such com munication being, however, under the control of a piston-valve E, with which tlieinterior of-the shaft is :ii-tt ing A; l

piston F other suitable valve;

FRANK BAILEY AliI'D 'rnnpnnrcn 'n NR JACKSQN, enema ENGLAND;

communes-mam Romany Morrow am In .GONTROLLING TEE mansmssron rrmnnon} 'Specification@fLtfiqrsPatit-" 17,1907. kpjilicatinniiled December27.1906.'iflariallio849fi86 l The nner sides o -tllejslab-like pistons' C are. formed with stems c which ally inwards, towards the axis 0 and protrude into the interior of the-hollow s'haftD. Opposite the pist'on-valve isa disk e, adapted to press amainsfli-and friction er'such conditiens,

se wa The stems efore inferred-ti) is- '65 ton-valve Eare, moreover, forme'dinsue -a .mannerinrelationfto one another-that, clitting-ofigthe piertsb of the radial passagesfb, piston-valve E may be furtheradvanced so as to intercept the inward movement of the pistonstems. c and thus, by holding the -"pistons- O in their protruded positions, to pre'- the 'disk B,'in which theyam mounted,

fbeing rotated within the circular chamber.

I According to the present improvements,

instead'of the opposite-sides of the circular I disk B working 111' contact with the sides-of the .easing'h, interposed, between I one of its sides and the casing, .a circular plate a, to the back of wbichthe fluid imder pressure is admitted'with the-effect that the plate is pressed into contact with the side of the disk B, the op osite side of the latter bein in turn pressed against the easa age; beiggjthereiby prevented or ed. A sh ar packing-plate may, 'in' like manner, be a plied on the opposite side of the disk. The R free to move slightly towards or away from the 1B; bnt it is prevented .fromjretatin with the disk by reason of a stop a? whic fengages a recess a and compels thej'plate a to revolve with the casing A Passages a a" lead from the back of thep-late, p

-.mounted preferably converge at :a central pointpwhere they are controlled by'a spring ton of this valve, may be controlled from the open or close communication between the packing-plate :a is v exterior by means of the spindle e" so as. to

passages a a and the interior awn shaft D.-

communication between the passages and the is o sure of the plate a :onthe disk .13 and leakage of the :iic iuid is permitted; the liquid being'also free to escape by way of holes a a 1n the packinglate; The relief afforded by the opening 0 the supplemen s but/considerable clear the disk B and and the Wallslb The action of the liquld on the plate a rotating a I5 and that the valve E is 1n the pos tion 25. chamber in the: disk an area,

plate.

so juncti um.

'55 ated by the. spindle 0 brake, the-stop a 'tary valve F is" of considerable importance when. the. B is-running freelyin the casing: Not only are additional assages rendered available for the return of t e fluid,

pistons C on the one hand of the casing A on the other hand, copious. leakage resulting with corresponding re 7 pumping action. of the apparatus;

is' as follower-Referring to Figs. 2 and3 of the: drawings'and assuming the clutch to be from. left to right of the observer,

shown in Fig. 1: the top' portion of the 011mm" (i -between the istons will contain liquid at. about atm'osp eric pressure, the space to-th e. right of the vertical piston will "20- be below atmosp enc pressure and drawing in"'oil,,. while the space to the left of this duction in resistance to the ance is left between istoini wailill befilfl'ied with oil which is being orced through the hole a in the plate a and. throirghthe passage 11 intothe central d thence to the back 0/. Thus, itwill be seen that the of the. piate disk facing the chambera is not side of the yet subjectedv to pressure over its whole surface. bnt'only' over a comparatively small bite the opposite side of the-plate is subjected to; pressure over its whole area.

If the plate 0/ is: outof contact with the Y. di'sk.B when the clutch is brought into operation, that. 35 the disksubfected to; areas or zones of greater or piessure due to thesweeping faceof'the plate Whlcll is opposite action of the; blades 0, and the liduid at the greater pressure is conducted by way ofahe oles; a? a to the chamber-at the back of the parti' ll'y or wholly closed there is little or no escape of the liquid, consequently, the greater v pressure. to which ortions of the face of the plate is subjects transmitted to the I 45 whole surface at the, back of the plate,

thereby forcing the plate into contact with the disk.

When thepacking-piate. a. and appurten-an'ces here referred to are employed in con- -'th means. for maintaining the sliding pistons 0 either in their protruded or their retracted positions, the valve F, which controls communication with the back "or the packing-;-late a", may be operi the valve E controlling the positions of. the slab-like pistons G,

Where. the apparatus is required to be capabie cfi direction also, or for occasional use as a carried bytheplate a, is arrangedv to work in a chase a formed in the casing A; the chase being of such length as to permit of the plate a partaking of an angular movement in relation to the casing, the extentoi this angular movement being such as The supplementary valveF being.

transmitting motion in the reverse:

her are sented by a nutf capable of being to ada t the positions of the holes a (L before re erred to, to the reversed direction of running or of powertransmission.

' Where the apparatus 18 not required for transmitting motion 1n the reverse-direction or for use as. a brake the extension of the recess for-the reception of the stop a so as to form a chase, an to permit of angular movement between the plate a and the casing A is superfluous, but if made has no injurious effect.

It will be obvious that the stop 0, might be mounted in the casin and engage in-a recess formed in the edge 0% the plate a;

A furtherimprovement consists in the provision of means whereby the chamber a, containin the liquid, is automatically replenished y the pumping actionof theclutch. With this-object, wearrange, in convenient relation to the li uid-chamber a, a reservoir G containing the iquid for of the clutch-chamber. This reservoir is placed in communication, by wa of'pipes or passages g', with that portion 0 the pumpchamber a, which, during. the pumping ac.- tion of the clutch, is under the influence of suction. The pipes or passages communieating with that portion of the liquidchamfurnished with non-return valves p1, so arranged as to admit the, liquid to t e chamber, but to prevent its return therefrom when the apparatus'isat may bearranged as a shield upon the side of the clutch-casing, asshown Figs. 1 and 3.,- and in such a ositionas which may lea from the main-shaft stuflfing-box d; the oil passing into the reservoir'G i I by way of non-return valves When it is 'desiredfthat, u on a certaintorque being reached,"the clutch slip to take place, the ressure sidcrof the) liquid chamber a, or a-c amber or assage. communicatin therewith, is provided with a relief-valve, w ich may be adjustable. valve may be type, but we refer to construct the valve F,

, which contr o s the passages 0/ from the back ofthe packing-plate a, in'such a manner as to operate automatically as a-relief-valve. This may be accomplishe as a piston-valve having on one side a trunk f, thus forming being-balanced by a spring 1. pressure on the annulus overcomes the spring, the valve the delivery-side of the pump in direct communication with thesuction-side thereof, For the purpose of adjustingthe load of the spring f we one face of w ich the outer end of the spring bears, while the opposite face of the abutment is inclined. This inclined face bears against a correspondingly inclined face pre-.-

the replenishment rest." Thereservoir to catch any oil I shall" permit- 1 of the ordinary relief-valve 1110 d by constructing it 1511- an annulus f to which e pressure-fluid 1s admitted; the load there n Q When "the;

that of; 12o. moves so as to'place'i rovide an abutment f against traversed 13o chamber and the disk,

milled head f It will be obviousthat the improvements hereinbefore described are equally applicable in cases Where the construction of the pump diifers from that adopted by us.- For example, the'disk might be elliptical and might revolve in a circular casing, the slab-like pistons being mounted to slide in the stead of in the disk. I

What we claim as our invention and desire to secure byLetters Patent, is z- 1. In hydraulic clutch mechanism of the character herein referred to, the combination, wit-h an eccentrically formed casing or chamber anda disk iiormed with radial slots in which slab-like pistons slide, of a packingplate interposed between said disk and one wall of said chamber, and passages formed in said wall and leading from said platev to a controlling valve, whereby the liquid under pressure isadmitte'd to the back of the plate,

substantially as and for the purpose set forth.

2: In hydraulic clutch mechanism, the combination, with an eccentrically formed liquid-chamber, a disk inclosed within said chamber and slab-like pistons which slide in radial slots formed in said disk, of a main controlling valve, a su ated in (unison wit said controlling valve, and passages communicating between the liquid chamber and said supplementary valve, which latterserves to more rapidly relieve the pressure of the liquid in the chamher and correspondingly diminish the resistance. l c

3. In hydraulic clutch mechanism of the character herein referred to, the combination, with a liquid-chamber, a disk inclosed within said chamber and a packing-plate interposed between one *wall of the liquid of means, such as versed substantia casing inplementary valve oper-v a stopupon said plate working in a chase formed in said chamber, for enabling the plate to partake of a limited rotative movement in relation to the said' casing when of running or of ower transmission is rel ly as and for the purposes set forth;

- 4. character herein referred to, the combination, with a liquid-chamber and a disk inclosed Within said plate-interposed between one wall of the liquid-chamber and the disk, a valve-chamberin said wall, passages communicating between the back chamber, and a relief valve-chamber," whereby, upon a certain pre determined pressure being reached, the valve opens. automatically and permits the liquid under pressure to escape from the back of the packing-plate to the exhaust or suctionside of the pump.

the direction In hydraulic clutch mechanism of the chamber, of a packing--- 55 of said plate'and the valve valve within said 6O tion, with a liquid chamber, of an oil--- i reservoir formed upon one wall of said chamber, passages communicating between said exhaust or suction-side of the l1qu1dcha1nber,and non-return valves in reservoir and the sald passages, the oil or other liquid passing from the reservoir to the pump-chamber under the influence of the suctlon or of centrifugal force, substantially as herein described.

In testimony whereof'we have signed our names to this specification in the two subscribing witnesses,

FRANK BAILEY.

FREDERICK HENRY JACKSON.

' Witnesses:

H. D. JAMESON,

A. NUTTING.

presence of; 

